Faulty Big or Little Stopper / Red lines / Flare.

We have had numerous complaints about particular Big Stoppers being faulty, causing light leaks and strange magenta colour casts on the image.

In every case so far, this has been caused by user error. The viewfinder MUST be covered during long exposures on both film and digital cameras. If left uncovered, light will ingress and find its way to the sensor, causing the flare lines and magenta casting that seem to indicate a faulty filter.

The filter must be placed in the rearmost filter slot, with the foam making a seal onto the filter holder body.

It must also be used in a LEE filter holder - other makes of holder do not have an adequate design to ensure a light free seal.

The viewfinder must be covered during all long exposures, regardless of the amount of ambient light.

We hope that this helps.


  1. Very Hard and Medium Grads.
  2. Big Stopper - Blue cast?
  3. Can I use a polariser & coloured filters together?
  4. Can I use a polariser and ND grad in the filter holder?
  5. Can I use filters on a digital compact?
  6. Can I use my existing screw in polariser with the LEE Filter Holder?
  7. Can I use the LEE System on 617 cameras ?
  8. Can I use the LEE system on a Canon 17mm TSE lens?
  9. Can I use the LEE System on my Rangefinder camera?
  10. Can I use the system on my Hasselblad CF 40mm?
  11. Can my scratched Resin Filters be polished?
  12. Can you make filters with two colours (i.e. ND & warm up)?
  13. Can you produce a colour temperature filter as a grad?
  14. Can you supply grad filters for Black & White photography ?
  15. Do LEE make a filter for infra red photography?
  16. Do LEE make centre ND filters, for wide angle lenses?
  17. Do the bayonet adaptor rings fit the inner or outer bayonet?
  18. Do you have a lens cap for your system?
  19. How can I use Grad filters on my rangefinder camera?
  20. How do I clean my Polyester Filters?
  21. How do I clean my Resin Filters?
  22. How do I mount polyester filters in the plastic frames?
  23. How do I store LEE resin filters?
  24. How many filters can I use before the image quality suffers?
  25. How much exposure compensation do I give Grad Filters?
  26. How wide will the LEE Filter System go without vignetting?
  27. I have lost the brass finger bolt / wedge / spring from my holder – help?
  28. I use SLR, Medium and Large Format cameras, does LEE have a system that can be used on all three?
  29. If I had to buy just one filter, which would you recommend?
  30. My lens has a non standard fitting – How can I use the LEE System?
  31. Polariser ring 105mm - longer screws needed?
  32. Should I use hard or soft grads?
  33. What do I need to get started using filters?
  34. What does 0.3, 0.6 etc. mean?
  35. What filter sizes do LEE make?
  36. What is a blender filter?
  37. What is a stop?
  38. What is the 100mm Push On Filter Holder?
  39. What is the difference between a Linear & Circular polariser?
  40. What is the difference between Resin, Polyester & Glass filters?
  41. What’s the difference between hard and soft grads?
  42. When should I use a wide angle adaptor ring?
  43. Where can I buy your photographic products?
  44. Where is my nearest Camera Filter dealer?
  45. Which lens hood should I choose?
  46. Why can’t I use a lens hood with my polariser?
  47. Why is 82mm the largest Wide Angle Adaptor Ring?
  48. Will a Wide Angle Adpaptor Ring work on any lens?
  49. Seven5 or RF75?
  50. Faulty Big or Little Stopper / Red lines / Flare.
  51. Inspiring Professional Book 1 & 2
  52. Do LEE make a system for the Zeiss 15mm?
  53. Medium Wide / Universal Hood
  54. Cleaning of the Microfibre Cloth
  55. Fuji X - 10-24mm
  56. Field Pouch
  57. Landscape Polariser
  58. LEE BUG compatability
  59. Sony Alpha cameras - which system.

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